Sticks are excellent for plastic welding but are listed as packs of 2 colours/bundle of Polypropylene (PP), 2 colours/bundle of Polyethylene (PE) and 1 colour/bundle of PVC. The actual package contained 2 bundles of PP (red and black), 1 bundle of PVC (grey), 1 bundle of PE (white) and 1 bundle of ABS (cream).